PXB4219EV34NP Infineon Technologies, PXB4219EV34NP Datasheet - Page 70
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PXB4219EV34NP
Manufacturer Part Number
PXB4219EV34NP
Description
Manufacturer
Infineon Technologies
Datasheet
1.PXB4219EV34NP.pdf
(290 pages)
Specifications of PXB4219EV34NP
Data Rate
2.048Mbps
Number Of Channels
1
Operating Supply Voltage (typ)
3.3V
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Not Compliant
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4.5
The Internal Clock Recovery Circuit (ICRC) may generate RTS values in upstream
direction and a 8.192, 2.048 or 1.544 MHz transmit clock in downstream direction. Each
port works independently using its own set of control registers and error counters. The
Cell delay variation is assumed to be less than +/- 4 ms.
According to ITU-T 432.1 [33] SRTS clock recovery is only defined for unstructured CES.
Therefore, ports supporting SRTS clock recovery have to be configured for only one
channel in unstructured CES with completely filled ATM cells.
The ICRC supports two Framer Interface formats
• FALC Mode (FAM, see
• Generic Interface Mode (GIM, see
These modes can be selected via bits “om” in the Operation Mode Register (opmo, see
Chapter
(“icrcconf”, see
Transmit clocks are generated by internal PLLs based on SRTS, ACM or both. The
method of transmit clock generation is selected via bits "srt" and "acm" in the
Configuration Register Downstream of Port N ("condN", see
of RTS values is enabled via bit “rtsg” in the Configuration Register Upstream of Port N
(“conuN”, see
kept disabled.
For communication between the ICRC and the rest of the chip a frame based protocol is
used. The internal interface as well as its protocol is the same as defined for the external
clock recovery interface (see
The ICRC contains the following sub blocks:
Data Sheet
for both E1 and T1.
2.048 MHz in case of E1 and 1.544 MHz in case of T1.
7.24) and bit “gim” in the Internal Clock Recovery Circuit Configuration Register
Internal Clock Recovery Circuit (ICRC)
Chapter
Chapter
7.51). If ACM is used, the corresponding RTS generator can be
7.46).
Chapter
Chapter
5.1.1) with a transmit clock frequency of 8.192 MHz
Chapter
5.4).
70
PXB 4219E, PXB 4220E, PXB 4221E
5.1.2) with a transmit clock frequency of
Chapter
Operational Description
7.47). Generation
IWE8, V3.4
2003-01-20
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